[IGNITE-10174] migrate examples tests from Junit 3 to 4

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6
• Fix Version/s: 2.8
• Labels: MakeTeamcityGreenAgain
• Assignee: Oleg Ignatenko
• Reporter: Oleg Ignatenko
• Created: 07/Nov/18 16:40
• Updated: 22/Nov/18 15:50
• Resolved: 22/Nov/18 15:46

Description

If needed, refer parent task for more details.

This is first task because examples are most publicly visible, relativelly small and least risky part of unit tests in the project.
Steps: 1) create Junit-4 based twin of GridAbstractTest (and all needed subclasses), 2) declare GridAbstractTest deprecated with reference to use newer API instead 3) change unit tests in examples to use new API

Issue Links

• is blocked by: IGNITE-10209 some tests in IgniteExamplesMLTestSuite fail with FileNotFoundException at SandboxMLCache#fillCacheWith(MLSandboxDatasets)
• is depended upon by: IGNITE-10175 migrate core module tests from Junit 3 to 4
• is depended upon by: IGNITE-10176 migrate non-core modules tests from Junit 3 to 4
• is related to: IGNITE-711 [Java 8 Examples] Need to complete implementation of Java 8 examples.
• links to: GitHub Pull Request #5369
• links to: Upsource review